Bhagavad Gita 2.63
क्रोधाद्भवति सम्मोहः सम्मोहात्स्मृतिविभ्रमः। स्मृतिभ्रंशाद् बुद्धिनाशो बुद्धिनाशात्प्रणश्यति॥
Easy meaning
Anger clouds the mind. From confusion, memory slips. From that, judgment fails — and we damage what we care about.
When to use
In the heat of an argument: delay the reply by one breath.